Study finds no long-term negative cognitive effects from marijuana

While cognitive performance is negatively affected by cannabis use, the negative effects appear to completely wear off within a month, according to research published in the Experimental and Clinical Psychopharmacology in late June.

“With the number of cannabis users both illicitly and licitly increasing, the question of any potential lasting impact from cannabis use is increasingly important,” Amy M. Schreiner and Michael E. Dunn of the University of Central Florida wrote in their study.

The study found that cannabis use caused small impairments in attention, learning, and other cognitive processes that persisted after intoxication. However, the researchers said it was unclear if these minor impairments “translate into practical impairments in functioning.” But the second meta-analysis suggested that these minor impairments don’t last longer than a month.

3. I was a stoner for over 20 years. I know it's not real accurate but I score about 133 on IQ tests.

I should be screwed if weed really had permanent negative effects. I'm among the most accurate at data entry at my job with the blood center. It's not real intense data entry but I have to do some every day.